baber/WOPTO huggingface dataset:
Patent GB-1364967-A (GB)
Title: Polymers containing quaternary ammonium broups
IPC: C08F8/14
Filed: 1972-08-11
Abstract: 1364967 Polymers containing quaternary ammonium groups MONSANTO CO 11 Aug 1972 [12 Aug 1971] 37599/72 Heading C3P [Also in Divisions C4 and A5]  A polymer having a molecular structure consisting of repeating units of the formula wherein R 1  is R 2  is an alkyl group having from 1 to 18 carbon atoms and attached via a primary carbon atom, or a quaternary salt group of the formula wherein n has the value 2 or 3, X represents chlorine or bromine, and R 3  is a group of the formula -(CH 2 ) m -CH 3  wherein m is 0 or an integer from 1 to 3, or a group of the formula wherein a is 0 or an integer from 1 to 20; M is hydrogen, alkali metal, ammonium or a (hydroxy-t-butyl) ammonium group of the formula the polymer having an average numerical ratio of repeating units to quaternary salt groups of from 10 : 1 to 200 : 1 and having an average of from 40 to 1000 repeating units per molecule may be prepared by reacting a copolymer of maleic anhydride having a molecular structure consisting of repeating units of the formula and an average of from 40 to 1,000 such units per molecule with an appropriate alcohol having from 1 to 18 carbon atoms and with an appropriate hydroxyalkyl quaternary ammonium salt in proportions such that the average numerical ratio of repeating units to quaternary salt groups in the product is from 10 : 1 to 200 : 1, and, when the required product is a polymer in which, in at least some of the repeating units, M is alkali metal, ammonium or (hydroxy-t-butyl) ammonium, neutralizing or partially neutralizing the acid ester thus formed to introduce the required cation M. In Examples I and II an ethylene/maleic anhydride copolymer is treated with and ethyl alcohol or 1-butanol and neutralized with 2-methyl-2-amino propanol. In Example III the resins of Examples I and II are dissolved in aerosol propellant solvents consisting of methylene chloride and difluoro monochloromethane.
Patent GB-989689-A (GB)
Title: Improvements in multi-channel time and sequence electrical control apparatus
Inventor: NEWSOME LESLIE
IPC: H01H43/08
Filed: 1962-10-05
Abstract: 989,689. Timed control of electric circuits. PROCESS UNITS (HALIFAX) Ltd. Sept. 30, 1963 [Oct. 5,1962], No. 37704/62. Heading G3T. A time and sequence electrical control apparatus comprises a uniselector switch mounted in a casing and stepped-on by a timing device, the uniselector having two or more banks each with the same number of contacts, one bank operating as a time control to control a programme of external operations through the remaining bank or banks, a terminal panel in the casing to which the banks are connected, and a programme card having corresponding rows flinted contacts which can be varied to provide the desired programme. The uniselector comprises one bank BT of twentyfive contacts which operates as the time control, and one or more similar banks B1, B2, . . . B5 controlling external circuits. These are connected to rows T, B11, B12. . . B15 of spring contacts 4 on panel 2. The prgramme card 12 has corresponding rows printed contacts 8 linked together. The card is inserted in a slot 11 in the casing and clamped by a handle 7 of shaft 5 carrying eccentrics 6. The selector is advanced by an electromagnet B25 through switch a<SP>2</SP> driven by a motor supplied through a rectifier bridge a<SP>1</SP>. One bank B6 is supplied with a directional current and has all its contacts excepting the first connected together. The first and subsequent contacts are in circuit respective with a start switch S1 and a reset stop switch S2 which are connected, along with control bank BT, to a self-interruptor contact Bdm of the stepping solenoid B25. The programme card is prepared by removing or blanking off any unwanted segments 8. Thus to determine the time of a complete programme, say of twenty steps, the segments 8 up to the twentieth on channel T are blanked off so that the selector on reaching the twenty-first contact position will home to the end of the card. If segment "O" is also left intact, the control will re-cycle the complete process without interruption. The rows T11-B15 onthe card may be similarly pre-arranged to control the external apparatus associated therewith. A hinged lid 13 over the slot 11 is locked in closed position by a plunger 16 operated by the handle 7.
Patent GB-914940-A (GB)
Title: Improvements in or relating to electrical capacitors
Inventor: FRANK ZENON WAWRZYNIEC
IPC: H01G13/00
Filed: 1960-11-04
Abstract: 914,940. Capacitors. HUNT (CAPACITORS) Ltd., A. H. Oct. 26, 1961 [Nov. 4, 1960], No. 38013/60. Class 37. A capacitor is enclosed within a thin-walled tubular case with corrugations formed along a section thereof adjacent to an open end, whereby the end sectional area is reduced and a roughened surface is provided to bond the case to a synthetic resin seal. Fig. 1 shows an electrolytic capacitor having a sintered tantalum anode 11 supported on porous insulating spacers 15, 16 within a silver can 13 filled with electrolyte and closed by a resilient washer 17 surrounding the anode lead. The open end of the can is inwardly tapered and corrugated at 20 by rotating it against angled knurling wheels (Figs. 2, 3, not shown) and the can is slid into an outer casing 21 closed at one end, whose open end is filled with a liquid polymerizable resin which sets at 22 to grip and seal the tapered end of the capacitor can. The capacitor may be non- electrolytic, may be sealed at both ends, or may be sealed in a mould which is removed after the resin has set.
Patent GB-1352425-A (GB)
Title: Signal detecting and latching circuit
IPC: H03K3/027
Filed: 1971-08-13
Abstract: 1352425 Pulse shaping circuits RCA CORPORATION 13 Aug 1971 [21 Aug 1970] 38082/71 Heading H3P A clock pulse (A, Fig. 3, not shown) applied to one input 28 of a coincidence gate 26 enables the gate to respond to a poorly shaped input (B) received at gate input 24 to produce an improved output pulse (E), positive feedback from C to the input 24 producing a latching action to hold the output E until the end of the clock pulse A. The input B may be from a magnetic memory and is fed via a differential amplifier 10 and a transformer 14 whose secondary 16 constitutes the D.C. path for the positive feedback from 42 to 24.
Patent GB-922550-A (GB)
Title: Improvements to the colour reproduction of a colour photographic material
IPC: G03C7/392
Filed: 1960-11-07
Abstract: a -(n-Palmitoyl)-a -acetoxy-acetic acid ethyl ester is prepared by adding lead tetracetate to n-palmitoyl acetic acid ethyl ester dissolved in acetic acid and then raising the temperature.  The product may be decarboxylated by heating with ethanol and concentrated HCl to give n-palmitoyl-methanol.  Reference also is made to heating the product with mono-ethanolamine. Specifications 557,750 558,258, 637,030, 670,457, 711,488, 718,404, 729,500, 731,301, 738,683, 750,201, 751,912, 752,146, 752,147, 752,148, 800,444, 810,780, 843,784 and 861,138 are referred to.
Patent GB-1214800-A (GB)
Title: A circuit for producing a pulse train of variable phase angle synchronous with an a.c. signal
IPC: G01L5/04
Filed: 1969-07-31
Abstract: 1,214,800. Triggering controlled rectifiers. SIEMENS A.G. 31 July, 1969 [1 Aug., 1968], No. 38556/69. Heading H2F. A circuit for producing pulses synchronized with an A.C. supply U N  and with a phase controlled by a D.C. signal U S  comprises a capacitor K1, rapidly charged via r3 and n2 to a voltage determined by the signal U S  and a diode n7 and slowly discharged during each half cycle of the A.C. supply U N  via a first transistor p1 and a diode nl. The first transistor p1 is coupled via diodes n3 and n4 to a second transistor p2 which is arranged to become non- conductive when the capacitor K1 has discharged to a predetermined voltage. A pulse is thus provided at the collector of p2 at a time following the beginning of each half cycle of U N  determined by U S . The control signal U S  may be derived from supply U N  or from across K2. The pulses may be used to trigger a triac p3 which controls the A.C. power in a load L. In Fig. 3 (not shown) three circuits of the type shown are controlled by a common signal U S  so as to control the power in a three-phase load.
Patent GB-1249006-A (GB)
Title: A mouth shield for use in dental treatment
Inventor: KULLAPLATSEN GUNNAR OSCARSSON
IPC: A61C5/90
Filed: 1969-08-01
Abstract: 1,249,006. Mouth shields. G. OSCARSSON. 1 Aug., 1969, No. 38649/69. Heading A5R. A mouth shield, consists of a plastics U- shaped member, side portions of which, converge towards their free ends. Each side portion 2, 4, has a generally semicircular periphery. The outer portion 2, when in use, is positioned against the patient's cheek, and is slightly convex, whilst the inner portion 4, is similar in shape, and is positioned against the inside of the cheek. The outer portion 2, is thicker in the middle, and the inner portion 4 is thinner in the middle, to facilitate the positioning of the device in the mouth. The outer portion 2, may have an aperture (10), Fig. 3, not shown, and the inner and outer portions may be of uniform thickness, and have roughened surfaces. The device is made of an elastic plastics, and may be coated with hydrophobic cellulose.
Patent GB-1119053-A (GB)
Title: Improvements in or relating to ultrasonic measuring apparatus
Inventor: DAVEY CYRIL NORMAN
IPC: G01B17/02
Filed: 1964-09-22
Abstract: 1,119,053. Ultrasonic inspection devices. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 17 Sept., 1965 [22 Sept., 1964], No. 38692/64. Heading H4D. In an ultrasonic system for measuring the wall thickness of a tube, the frequency of transmitted acoustic signals is varied about a mean value by a modulating signal, signals received after reflection from the front and rear surfaces of a section of the wall are compared with the modulating signal to derive a control signal, and the mean frequency is varied in dependence upon the control signal such that the amplitude of the received signals tends to become a minimum, the mean frequency then providing a measure of the wall thickness. As shown, barium titanate transmitting and receiving transducers 3, 4 respectively, scan the wall of a tube 1 which is rotated and/or translated in a water-bath 2. Transducer 3 is driven by an oscillator 6 whose frequency is varied between 4À9 Mc/s. and 5À1 Mc/s. (with a mean frequency of 5À0 Mc/s.) by a modulating signal from a 10 kc/s. square wave or 400 c/s. sine wave generator 7. Amplified and rectified signals from transducer 4 are compared with the modulating signal by a unit 11 which provides a D.C. control signal; the level of which is proportional to the slope ,of the amplitude/ frequency characteristic of the received signals and will thus be a minimum when the wall thickness corresponds to an odd number of quarter-wavelengths of the acoustic signal. Oscillator 6 is made to "hunt " the frequency at which this minimum occurs, by means of a linear sweep circuit 13 which varies the mean frequency of oscillator 6 at 20 c/s., and is then held at the required frequency by the control signal, which acts in such a sense as to inhibit the sweep. The system permits slow variations of wall thickness to be followed. The mean frequency of oscillator 6 is indicated on a meter 8, and a unit 9 may periodically record the reading of meter 8 or print out the wall thickness in digital form. An analogue indication of wall thickness may be provided by a pen recorder (not shown) and voltmeter 14, both connected to the sweep signal output of circuit 13. The frequency range of oscillator 6 is initially set manually to include the frequency corresponding to the minimum output from unit 11, the variation in received signal amplitude with frequency being observed on an oscilloscope.
Patent GB-1072024-A (GB)
Title: Semiconductor rectifier devices
IPC: C22C27/04
Filed: 1965-09-10
Abstract: A support member soldered to the semi-conductor wafer of a junction rectifier is an alloy containing by weight 90%-99.5% of tungsten, molybdenum or a mixture thereof and from 0.5% - 10% of a mixture defined in either A or B.  A contains 28-30% nickel, 16-18% cobalt, 0.2-0.3% manganese, and iron to 100%.  B contains 35-39% nickel, 0.3-0.9% manganese, 0.15-0.2% carbon, and iron to 100%.  Such a support member may be bonded to an N-type germanium or silicon wafer with tin, a tin-lead solder, or with an alloy of silver with at least one of tin, lead, silicon, and germanium.  A similar member, which may be cupped to receive the end of a conductor, may be bonded to the other surface of the wafer with a solder (such as aluminium, an aluminium alloy, or indium) which forms a rectifying connection. Individual members may be produced by blanking from sheets or cutting from rods and billets. These are produced by (a) ball milling all the components, pressing and sintering; (b) ball milling the tungsten and/or molybdenum with or without a small proportion of the remaining components, pressing and sintering, and then impregnating with the bulk of the remaining components; or (c) ball milling the tungsten and/or molybdenum with or without a small proportion of the remaining components, pressing, and sinter-impregnating with the bulk of the remaining components. Heat treatment during this processing is carried out at temperatures above 1300 DEG C. for periods of 10 minutes to 25 hours and in vacuo, in helium, or in hydrogen.  In two examples a finely divided alloy of 29% Ni, 17% Co, 0.2% Mn, and 53.8% Fe is ball milled with 98.5% of powdered tungsten (or 97.2% molybdenum), pressed into a rod-form and sintered in hydrogen for 15 minutes at 1495 DEG C.  The rods are cut into discs which are gold plated and brazed to semi-conductor wafers with a silver alloy.
Patent GB-839905-A (GB)
Title: Anemometers
Inventor: GAUDEN CLARENCE GODFREY
Filed: 1957-12-13
Abstract: 839,905. Photo-electric measuring apparatus. REVO ELECTRIC CO. Ltd. Nov. 28, 1958 [Dec. 13, 1957], No. 38742/57. Class 40 (3). An anemometer comprises a bladed rotor g journalled between two pillars b, c, so that the blades periodically interrupt radiation from a light source m in pillar b to a photo-transistor p in pillar c, the output of pulses from the photo-transistor being measured, e.g. by a plurality of decatrons, to determine the speed of the rotor. In a modification, the rotor is supported by arms attached radially to a shroud k which surrounds the rotor.
Patent GB-1095635-A (GB)
Title: Improvements relating to tone callers
Inventor: SSETT GEOFFREY HERBERT BRA
IPC: H04M19/04
Filed: 1965-09-10
Abstract: 1,095,635. Waveform generators; amplitude modulation. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 18, 1966 [Sept. 10, 1965], No. 38763/65. Headings H4K, H3R and H3T. A tone caller (ringer) which provides a tone of increasing volume, comprises an electroacoustic transducer B, energized by a tone frequency oscillator A whose output power level is controlled by the level of the D.C. voltage applied to its input 3, 4, this D.C. voltage level being dependent on the conductance of a transistor V provided in a circuit, which converts the low frequency alternating ringing current applied to input 1, 2 into the D.C. voltage. On application of the ringing current at terminals 1, 2, the bias voltage applied to the base of NPN transistor V is small and so a low voltage appears across the oscillator input 3, 4 resulting in a quiet tone. Capacitor C1 is gradually charged during negative half-cycles of the ringing current, discharge through resistor R3 being prevented by rectifier D2 during positive half-cycles. Thus the transistor collector current, and as a result, the voltage at 3, 4 increases with time, the characteristic of this build-up being dictated by resistive component Z. This may be linear, resulting in a fall-off with time of the rise rate of the D.C. voltage because of the fall in the rate of charging of capacitor Cl, or non-linear, e.g. a varistor, a selenium, metal oxide or semi-conductor rectifier or a Zener diode. Capacitor C2 ensures a low-impedance input for the oscillator, which may be a PNP transistor oscillator circuit (Fig. 2, not shown), and provides de-coupling of tone frequency signals sent back to line.
Patent GB-1185380-A (GB)
Title: The Antibiotic Cremeomycin
IPC: C12P1/06
Filed: 1967-08-23
Abstract: 1,185,380. Antibiotic compositions. UPJOHN CO. 23 Aug., 1967 [19 Sept., 1966], No. 38773/67. Heading A5E. [Also in Division C2] Antibacterial and antifungal compositions for industrial use comprise the antibiotic cremeomycin or a salt thereof [see Division C2] and a carrier. They may be used as a preservative for laundered clothes or paper; for the treatment of odour in fish and fish crates; for the prevention of infections of silkworms due to the presence of B. subtilis; for treating pigeon roosts against Cryptococcus neoformans.
Patent GB-1424967-A (GB)
Title: Powder coating compositions
IPC: C08G59/32
Filed: 1974-09-05
Abstract: 1424967 Coating composition FORD MOTOR CO Ltd 5 Sept 1974 [6 Sept 1973] 38873/74 Heading C3B A powder coating composition comprises a mixture of: (I) a copolymer derived from 5- 20% by wt. of a glycidyl ester of a monoethyleni. cally unsaturated acid; 2-10% by wt, of a C 5-7  hydroxyalkyl (meth)acrylate; and 70-93% of other monoethylenically unsaturated monomer(s), having a glass transition temperature of 40-90‹ C. and average M.W. 1500 to 15,000, and (II) a saturated, straight chain, C 4-20  aliphatic dicarboxylic acid to provide 0À8-1À1 carboxyl groups for each functional group in I (i.e. epoxy plus hydroxy groups). Examples of II are azelaic, adipic, pimelic, suberic, sebacic, undecanoic and brassylic acids. The composition may also contain cross-linking catalysts, flow control agents, pigments and antistatic agents.
Patent GB-1209218-A (GB)
Title: Pyrimidine derivatives, process for their production and compositions containing same
IPC: C07D239/38
Filed: 1968-08-15
Abstract: 1,209,218. Fungicidal treatment of seeds. AGRIPAT S.A. 15 Aug., 1968 [16 Aug., 1967], No. 38979/68. Heading A2Q. [Also in Divisions A5 and C2] Seeds are coated with antifungal composition comprising a compound of the general formula wherein each of Hal 1  and Hal 2  represents chlorine or bromine, R 1  represents chlorine, bromine or a C 1-5  alkyl radical, and R 2  represents an alkyl radical, or a phenyl radical which is unsubstituted or is substituted by chlorine and/or a C 1-5  alkyl radical, together with carriers and, optionally, inert solvents or distributing agents.
Patent GB-389942-A (GB)
Abstract: 389,942. Force - feed lubricators. SYMONDS, F., 12, Duke Street, Newcastleunder-Lyme. Jan. 12, 1932, No. 859. [Class 12 (iii).] Apparatus for feeding lubricant under pressure comprises a verticallyarranged cylinder A containing a free piston B and provided with a cover plate at each end, the upper plate D being provided with a filling screw L for supplying the lubricant into the cylinder above the piston and having a discharge connection M fitted with a non- return valve N, while the lower plate E has an inlet connection I for the supply of pressure fluid to the underside of the piston, whereby the latter is forced upwards to discharge the lubricant past the valve N. The plate E is also fitted with a drain cock H and the connection I is fitted with a relief valve F and a pressure gauge G. The source of pressure fluid may comprise a mechanically-operated oil pump J fitted with a sight glass K.
Patent GB-872295-A (GB)
Title: Improvements relating to ion-exchange processes
Inventor: MILTON JOHN GEORGE
IPC: B01D15/04
Filed: 1956-12-21
Abstract: <PICT:0872295/III/1> In an ionic exchange process, in which a bed of ionic-exchange material becomes charged with substances extracted from a solution, which substances are then washed out and recovered, while at the same time the bed is regenerated, at the stages in the cycle of operations (1) removing pregnant solution and eluting the bed and (2) removing the eluents and back-washing the bed; the liquid above the bed (the liquid "dome") is withdrawn, and replaced by air at atmospheric pressure.  By this means valuable ions, e.g. uranium are not diluted or lost in wash waters.  For example, a bed of ionic exchange material 1 about half fills a cylinder 2 which is filled with pregnant solution admitted from a tank 4.  The pregnant solution flows from the discharge 23 and preferably to a second bed and then passes to waste.  To regenerate the bed, the pregnant liquor is displaced downwards by water admitted through a pipe 24, and the pregnant outflow passes through a pipe 27 to tank 10 and returns to tank 4.  Water is admitted from a pipe 28 to the bottom of the bed and flows out at the top through pipes 21, 29 to tank 10.  The water dome above the bed is drawn off through a drainer 3 and pipe 32 to the tank 10, while air enters through a valve 16.  A first eluent wash is introduced through pipe 35 and device 8 and displaces the air through the valve 16, and the water in the bed runs to waste through a pipe 36.  The first eluent is drawn off from the bed into a pipe 37 which leads to a precipitator recovering the extracted component. The vessel is thus still filled with first eluent, and the second eluent is then admitted through pipes 19, 21 and displaces the liquid dome, and the combined eluates flow into the tank 11.  The dome of the second eluate is drawn off through the drainer 3 to form the 1st eluate in the next cycle, and is replaced by air, which is then replaced by water admitted through a device 8 from a pipe 39.  The second eluent in the bed is thus forced out into tank 5.  Pregnant solution is then re-admitted pushing the water downwards until the bed is again fully charged with the solution, thus completing the cycle.